Watch



(ModeL) D. A. A. BUCK. Watch.

No. 234233. Patented Nov. 9,1880.

SHINGTO.

N, PETERS. PHOTO-LITHOG UNITED STATES PATENT OFFICE.

D. AZRO A. BUCK, OF WATERBURY, CONNECTICUT.

WATCH.

SPECIFICATION forming part of Letters Patent No. 234,233, dated November9, 1880,

Application filed April 5,1880. (Model) T 0 all whom) it may concern:

Be it known that I, I). AZRO A. BUCK, of Waterbury, in the county of NewHaven, and in the State of Connecticut, have invented certain new anduseful Improvements in iVatch- Cases; and 1 do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompa nying drawings, making a part of thisspecification, in which- Figure 1 is a perspective view of the notchedring and cap separated from the case. Fig. 2 is a plan view of saidcase, showing said ring in position, and Fig. 3 is a like view of thesame with the cap in place.

Letters of like name and kind refer to like parts in each of thefigures.

The design of my invention is to furnish a more secure attachment forthe notched ring and cap with the case, and a better bearing for thespring-wheel; to which end it consists, principally, in the combinationof the notched ring provided within its outer face with a rabbet for thereception of the sprin wheel, the cap fitted upon and secured to saidring outside of said rabbet, and the springwheel placed between saidparts, substantially as and for the purpose hereinafter specified.

It consists, further, in the means employed for combining said notchedring with the casecenter, substantially as and for the purposehereinafter shown.

It consists, finally, in the combination of said notched ring and cap,substantially as and for the purpose hereinafter set forth.

In the annexed drawings, A represents the center of a watch-case, inwhich is placed a watch-movement, B. that is pivoted centrally androtates around its axis.

Within the rear side of the center A is placed a ring, C, that haswithin its inner edge notches c, for engagement with stop mechanism, andis secured in position by means of a steady-pin, c, which projectsradially from its periphery and fits into a corresponding opening, a, insaid case-center, and a screw, 0 that passes from within through saidring and case-center at a point opposite to said steady-pin.

iVithin the outer face of the notched ring C is formed a right-angledgroove or rabbet, c

' which receives a plate, D, that holds a mainspring, E, and operates asabarrel and a winding-whcel for the same. Said plate orwinding-wheelfurnishes a bearin g at its center for the rear pivotalbearing, 1), of the movement B, upon which bearing is attached the innerend of said mainspring. The spring-wheel D is rotated only for windingthe mainspringE, and for such purpose the rabbet c furnishes asufiicient bearing.

Fitted over and inclosing the mainspriu g E is a cap, F, which has theform shown in Fig. 1, and has a bearing at its edge, upon the outer faceof the toothed ring C,outside of the rabbet 0 a, sufficient space beingleft between said cap and the spring-wheel D for the free movement ofthe spring E. Said cap is secured to or upon said ring by means of twoor more screws,f, which pass through the edge of the former and havetheir threaded ends contained within threaded openings in the latter.The cap and notched ring thus secured together and to the case cannotbecome dis placed without violence, and by confining the mainspring andits wheel steadily in position furnish for the rear pivot, Z), a firmbearing.

Having thus fully set forth the nature and merits of my invention, whatI claim as new 1s- 1. The combination of the notched ring C, providedwith the rabbet 0 the spring-wheel D, fitted into said rabbet, and thecap F, placed over said spring-wheel and secured upon said notched ring,substantially as and for the purpose specified.

2. The combination of the case-center A, provided with the radialopening a, with the notched ring C, having the radial steady-pin c andscrew 0 substantially as and for the purpose shown.

3. The combination of the notched ring C and cap F by means of thescrews f passing through the latter into the former, substantially asand for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this27th day of March, 1880.

D. AZRO A. BUCK.

Vitnesses J AS. E. HUTGHINSON, HENRY G. HAZARD.

